Spiral absorber solar thermal water heating panel



FIG. 1 is an isometric perspective view of a flat-plate solar thermal water heating panel;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is a front-side perspective view thereof;

FIG. 5 is a back-side perspective view thereof;

FIG. 6 is a left-side perspective view thereof; and,

FIG. 7 is a right-side perspective view thereof. 

CLAIM The ornamental design for a spiral absorber solar thermal water heating panel, as shown and described. 